Closure for retort coke-ovens.



H. KOPPERS.

CLOSURE FOR RETORT 00KB OVENS.

APPLICATION FILED JULY 8, 1913.

Patented June 9, 19%

UNITED STATES PATENT OFFICE.

HEINRICH KOPIEERS, or EssErf-oN-rHE-RUHR, GERMANY, .ASSIGNOR TO H. xorrnns COMPANY, or CHICAGO, ILLINOIS, A CORPORATION.

CLOSURE FOR RCETORT COKE-OVENS.

To all whom it may concern:

Be it known that I, HEINRICH KOPPERS, a subject of the German Emperor, residing at Essen-on-the-Ruhr, in Germany, have invented certain new and useful Improvements in Closures for Retort Coke-Ovens, of which the following is a specification.

The object of this invention is to effect certain improvements in the construction of packed doors for coke ovens and other retort ovens. It is usual to arrange these doors to make a 'oint with an iron frame, which is closed all the way around and is connected with the; door frame of the adjoining oven, so that the several frames form a continuous protection for the oven walls. A continuous protecting structure of this description can obviously1 in practice only be conveniently fitted w en building a new bank of ovens. It is also very expensive, and the Warping of one of the frames in volves the adjacent frames more or less. In my invention I avoid the use of this continuous series of frames and make a direct joint between the door and the oven faces, the latter being armored with cast-iron corner bars, to permit of obtainin a good jointwith the small bearing sur aces available. The said corner bars extend the whole height of the oven and are fixed in a suitable manner. These bars .are stepped so that the door fits against a shoulder, the outward flange of the barforming with the door a recess into which packing material is introduced. These door structures being independent of one another, they may be applied to any existing oven, and they are inexpensive and independent of the adjacent oven heads. Moreover, defective corner bars can be easily renewed at a low cost.

The invention is illustrated in the accompanying drawing, in which- Figure 1 is an elevation showing portions of two doors with their framing Fig. 2 being a horizontal section thereof.

Referring to the drawing, the flue 11 is closed in front by head or facing blocks 12. The girders 13 for anchorin the oven also serve to support the oven head, which is formed by thGsStOIlGS 12. Cast-iron corner bars 14:, angular in cross section, are cemented into recesses in the stone blocks, and the two bars at opposite sides of the blocks are held together by bolts 15, distance pieces 16 being provided to keep the bars 14 the Specification of Letters Patent.

Application filed July 8, 1913.

Patented June 9, 19.1.4. Serial No. 777,881.

plate 19.

The door frame 17 fits with its shoulder 20 against one of the flanges of the adjacent angle bar 14, so that a metal to metal contact is obtained. Between the other flange of the angle bar and the outward extension of the door frame there is a space, which is filled with suitable packing material 21, which may consist of clay, as the packing is not subjected to any pressure.

It will be apparent that in the case of ri id frames, warping renders the insertion o packed doors extremely diiiicult, as the frame with inserted packing, to take the pressure and make the joint, must be very narrow, and exact in size.

With my improved structure the pressure is taken by the side bars and any warping which may occur can distribute itself along the width of the shoulder on both bars. whereby the above mentioned diiiiculties are obviated as regards a large number of small distortions.

I claim:

1. Closure for retort coke ovens comprising a pair of metallic reinforcing corner bars secured to the vertical forward edges of the coking chambenmouth and provided with outwardly extending flanges, a door. and a metallic frame secured to said door and provided with shoulders adapted to engage the corner bars and with flanges extending outwardly from said shoulders, the opposed corner bar-flanges and frameflanges forming pockets for the reception of'a packing material.

2. Closure for retort coke ovens comprising a plurality of spaced parallel coking chambers, a facing block between each pair of adjacent coking chambers, metallic an gular corner bars secured to the upright forward edges of each block, and doors having shouldered metallic frames that are adapted to engage the corner bars of adjacent facing blocks.

3. Closure for retort coke ovens comprising a plurality of spaced parallel coking chambers, a facing block between each pair ,of adjacent coking chambers, metallic angular corner bars extending along the upright forward edges of each block, means for connecting the corner bars of each block adapted to engage the corner bars of adja .with each other and with the block, and cent facing blocks, said frames having doors having shouldered metallic frames fian-gesthat extend forwardly from "their 15 that are adapted to engage the corner bars shoulders to form in conjunction" with the of adjoining facing blocks. corner bars, packing receiving channels.

4. Closure for retort coke ovens 'compris- In testimony whereof I have signed my ing a plurality of spaced parallel coking name to this specification in the presence of chambers, a facing block between each pair two subscribing witnesses.

of adjacent -coking chambers, metallic an- HEINRICH KO PPERS; gular corner bars secured to the upright Witnesses: forward edges of each block, and doors hav- HENRY HASPER,

ing shouldered metallic frames that are WOLDEMAR HAUPT. 

